Template Struct StorageAccessor

• Defined in File storage_accessor.hpp

Struct Documentation

template<typename Impl>
struct ripple::StorageAccessor

The StorageAccessor struct defines an interface for all classes which access storage using compile time indices, where the compile time indices are used to access the Ith type in the storage, and for storage where the Ith type is a vectortype, the Jth element.

The StorageAccessor types defines an interface for all classes which access storage using compile time indices, where the compile time indices are used to access the Ith type in the storage for N type, and for storage where the Ith type is an array type, also any of the J elements.

Template Parameters

• Impl: The implementation of the interface.

Public Functions

template<typename Other>
auto copy(const Other &other) noexcept -> void

Explicitly copies the data from the other storage type.

Parameters

• other: The other storage type tto copy from.

Template Parameters

• ImplOhter: The type of the other storage.

template<size_t I>
constexpr auto components_of() const noexcept -> size_t

Returns the number of components in the Ith type being stored.

For non-indexable types this will always return 1, otherwise will return the number of possible components which can be indexed.

Return

The number of components in the Ith element.

Template Parameters

• I: The index of the type to get the number of components for.

template<size_t I>
decltype(auto) get() noexcept

Gets a reference to the Ith data type which is stored.

Return

A reference to the Ith type.

Template Parameters

• I: The index of the type to get the data from.

template<size_t I>
decltype(auto) get() const noexcept

Gets a const reference to the Ith data type which is stored.

Return

A const reference to the Ith type.

Template Parameters

• I: The index of the type to get the data from.

template<size_t I, size_t J>
decltype(auto) get() noexcept

Gets a reference to the Jth element in the Ith data type which is stored.

Note

The implementation should ensure that calling this with indices I, J which results in incorrect access causes a compile time error. For example if the Ith type is an int, for which there is no J element, then this should cause a compile time error.

Return

A reference to the Jth component of the Ith type.

Template Parameters

• I: The index of the type to get the data from.

• J: The index of the element in the type to get.

template<size_t I, size_t J>
decltype(auto) get() const noexcept

Gets a const reference to the Jth element in the Ith data type which is stored.

Note

The implementation should ensure that calling this with indices I, J which results in incorrect access causes a compile time error. For example if the Ith type is an int, for which there is no J element, then this should cause a compile time error.

Return

A const reference to the Jth component of the Ith type.

Template Parameters

• I: The index of the type to get the data from.

• J: The index of the element in the type to get.

template<size_t I>
decltype(auto) get(size_t j) noexcept

Gets a reference to the jth element in the Ith data type which is stored.

Return

A reference to the jth component of the Ith type.

Parameters

• j: The index of the element in the type to get.

Template Parameters

• I: The index of the type to get the data from.

template<size_t I>
decltype(auto) get(size_t j) const noexcept

Gets a reference to the jth element in the Ith data type which is stored.

Return

A const reference to the jth component of the Ith type.

Parameters

• j: The index of the element in the type to get.

Template Parameters

• I: The index of the type to get the data from.